package com.atguigu.netty.codec1;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

/**
 * @author: 叶子
 * @date: 2022/02/08 18:25
 **/
public class NettyClientHandler extends ChannelInboundHandlerAdapter {
//        当通道就绪时就会触发该方法
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
//        发送一个Student 对象到服务器
        StudentPOJO.Student student = StudentPOJO.Student.newBuilder().setId(4).setName("阿琳").build();
        ctx.writeAndFlush(student);
    }
//    当通道有读取事件时，会触发
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf buf = (ByteBuf) msg;
        System.out.println("服务器回复的消息："+buf.toString(CharsetUtil.UTF_8));
        System.out.println("服务器的地址："+ctx.channel().remoteAddress());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}